Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a87247b33d9c08…

MALICIOUS

PDF

46.1 KB Created: 2020-08-10 10:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ec2fdda90a960e249e2f993c60ff96fc SHA-1: 61492eec2219a90ea83f47c7a347718439d9f1a4 SHA-256: c3a87247b33d9c08d00cc84be443455a20f011570df752a616a4bee0bc3ce13e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=abortion+law+in+new+york+pdf In PDF document text
    • http://files.shifaacounseling.com/uploads/1/3/2/6/132681164/9451692.pdfIn PDF document text
    • http://files.autochthonapn.com/uploads/1/3/1/4/131407424/lemib-rekenufos.pdfIn PDF document text
    • http://files.nuscouting.org/uploads/1/3/0/7/130739974/0904b7.pdfIn PDF document text
    • http://files.nancebmecleaning.com/uploads/1/3/2/3/132303245/zurimanidimi-tesozokidipok-kemidivunewij-rewowerexugos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/11902477459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/kuwawukafikezigifupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2199/9003/files/seziloxetugipesapat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/fundamentals_of_engineering_thermodynamics_8th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/7953571665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2075/3823/files/health_hazards_of_alcohol_consumption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/employment_law_cases_and_materials_eighth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7637/files/character_analysis_of_hamlet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/weboka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33078626275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/bank_exam_paper_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/roman_architecture_history.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 5032 bytes
SHA-256: 1b5588395d5fbe20c3661b6328a626a4f6c4bd7c7334b2c39cf4c2dcc452db46
font_01_sfnt_off00007b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B37 10012 bytes
SHA-256: ab61190ba8f76a5bc330613606e85c6445b6ed9da4756bd93b69ee85ca1fda86
font_02_sfnt_off00009d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D86 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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